In music, Op. 109 stands for Opus number 109. Compositions that are assigned this number include:
Beethoven – Piano Sonata No. 30 Dvořák – The Golden Spinning Wheel Fauré – Cello Sonata No. 1 Glazunov – Saxophone Concerto Schumann – Ball-Scenen (Scenes from a Ball) (piano 4 hands) Sibelius – The Tempest (), theatre score and a prelude plus two suites (1925, arranged 1927)